Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bce98d0cc864e7c…

MALICIOUS

PDF

155.1 KB Created: 2020-08-02 17:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27d5d8890977293a6a66acbaeaf044df SHA-1: e9f0166287a57dd725f8a90be9183d293a333fb6 SHA-256: 9bce98d0cc864e7c39a3cf817bde38bec806cb1d782d9d070330a57ac7c5ea5d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link disguised as a 'Fallout 4 console commands list' that redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=fallout+4+console+commands+list
    • http://files.porterrc.com/uploads/1/3/1/8/131871762/pipuwifijulexag-sudebejeru.pdf
    • http://files.joburgkidspaces.com/uploads/1/3/2/3/132303060/115574.pdf
    • http://files.beso.co.nz/uploads/1/3/2/7/132740682/a3d08262ae3.pdf
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/bukixanivuzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/nalegizuji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0437/2771/6520/files/gubisujowakete.pdf
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/itil_v3_foundation_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0431/6017/4754/files/tigulanutubuzeli.pdf
    • https://cdn.shopify.com/s/files/1/0439/1138/1147/files/minecraft_uuid_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/jakamesosa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/93545564664.pdf
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/zatixib.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/kawanenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7667/2918/files/sases.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/31400000461.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000203e3.bin
2dd075dae5cdb483ca0c2b595a9297500f5418f8f9c48f6bff154b8373bb2e6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x203E3 5032 bytes
font_01_sfnt_off000214f8.bin
87bc69e03a248217854dfba6b954547550175b9113d9aea591f6771a78127dae
pdf-font-stream PDF embedded font (sfnt) at offset 0x214F8 16960 bytes
font_02_sfnt_off000248a8.bin
43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x248A8 16132 bytes